Update README.md

README.md

@@ -19,4 +19,14 @@ The dataset was created from shared `.vert` file format using [convert_ksk.py](h
 
 The selection of texts maintains the condition of diversity in idiolects, meaning it represents the language of 2,000 different writers from across the Czech Republic, belonging to all age and educational categories. However, emphasis is placed particularly on the communication of young people, which best illustrates the current developmental trends in the Czech language, the transformation of the correspondence genre, and the written expression in general.
 
-
+## Citation
+If you use the corpus, please cite the following work:
+```bibtex
+@misc{hladka2006ksk,
+  author       = {Zdeňka Hladká},
+  title        = {KSK-dopisy (Korpus soukromé korespondence): přepisy ručně psaných dopisů z let 1990--2004},
+  year         = {2006},
+  howpublished = {Ústav Českého národního korpusu FF UK, Praha},
+  note         = {Released corpus}
+}
+```